F. M. Chen

Notice of Retraction The research on the value of multimedia teaching method in the course of University physics

Effective teaching means the efficient and cost-effective teaching which meets the laws of teaching. There have a number of affective factors in effective teaching. This article provides the application status and main problems in multimedia teaching of University physics course, and analyzes the role of University physics teacher in multimedia methods, finally gives some specific measures to solve the problems.

Investigation of Resistivity's Abnormity and Moduli of Elasticity Softening in NiTi Shape Memory Alloy

Spreading the landau phase change theory, by using two order parameters, that is martensite transition percentange Φ and mean shearing strain ε, and supposing friction function is the first-order linear coupling of them. Explaining the experimental facts of resistivity’s abnormal raising and moduli of elasticity’s softening on the Thermoelastic Martensitic Tansformation. Keywords-phase transformations; stress; thermoelastic martensite; phenomenological theory ; Shape memory effect

Collecting Diffraction Patterns with a Two-Phase Double-Rows Linear Array CCD Apparatus

Using a two-phase double-rows linear array CCD apparatus fitted up with a collecting card for special use, we collect and measure Frauhofer diffraction patterns formed by He-Ne laser through Single slit and double slit . The principle, the experiment device and the adjustment requirements are introduced. Through comparing the measurement values with the theoretical values, we find this method has the advantage of precision besides quickness. KeywordsCCD apparatus; Light distribution; Live collecting; Diffraction pattern

Research and Realization of Drawing and Document Management System for Small and Medium-Sized Mechanical Manufacturing Enterprises

This thesis makes a basic framework of drawing and document management system based on PDM technology for an automobile company in Luoyang by means of investigating and analyzing the status quo of small and medium-sized mechanical manufacturing enterprises. Besides, the thesis expatiates upon the functions of the major functional modules of this system and discusses some key issues for the system¿s fulfillment and the method for its fulfillment that should be taken into account.

Imperfection and improvement of multimedia technology in the teaching of university physics

Application of multimedia technology in the teaching of university physics is a certainly tendency, multimedia teaching as a new model is adopted by many teachers of university, which is beneficial supplement in the traditional teaching, but it usually appears some problems and imperfection, such as teaching contents,teaching rhythm,teaching methods. If gain satisfied teaching effect, we must realize the imperfection of multimedia technology in the teaching, then improve the imperfection by enhancing PowerPoint, controling the teaching rhythm, combining the model between traditional teaching and multimedia teaching.

Collecting and Analyzing the Intensity Distribution of Diffraction by Computer

Traditional method of measuring intensity distribution of diffraction (screw-driven photocell method) causes big error. This paper introduced principle, experimental devices and requirements for adjustment of collecting intensity distribution of diffraction by CCD apparatus. The distribution curves of the single-slit and double-slit diffraction with different slit-width are obtained. The relative light intensity and relative light intensity distribution of them are calculated. Compared with the theoretical value, the relative errors are obtained. KeywordsCCD apparatus; Fraunhofer diffraction; intensity distribution

Measuring Wavelength of Light Wave by Isochromatic Spectrum

The creating and characteristic of the isochromatic spectrum is analyzed.The method and equipment for wave length measurement using the isochromatic spectrum is introduced, and some approaches for improving measurement precision are discussed too. Mercury lamp ( 1 . 546 1 = λ nm, 0 . 577 2 = λ nm) is

Thermal Adaptability of Proteins on Amino Acid Composition

This paper is on composition difference of proteins with different thermal adaptability. Statistic analysis of protein sequences and lattice simulation according to the composition differences were done. Differently with the other works on this subject, the composition comparison was based upon hyperthermophilic, thermophilic, mesophilic, psychrotolerantic and psychrophilic proteins together. According to the results, we think that the composition differences of proteins with different thermal adaptability indeed have biological effects of thermal adaptability. The results also show the consistency of the composition difference between thermophilic and psychrophilic proteins and the composition difference between prokaryotic and eukaryotic proteins. This supports the hypothesis of biological evolution from thermophiles.

Kidney Damage Associated with Tumor

The aim of this paper is to explore the relativity between tumor and kidney damage. This method presents the pathogeny, nosogenesis, clinical manifestation, treatment and prognosis of kidney damage what is resulted from tumor in addition to kidney through two cases of clinical data about patient suffering from kidney damage associated with tumor. It is concluded that there is a certain inherent link between tumor and kidney disease.The tumor in addition to kidney can result in the damage of renal function. With the recurrence and deterioration of tumor, kidney disease can be reproduced or aggravate. Kidney damage associated with tumor can also lead to renal failure rapidly. When the chronic renal failure, it requires regular hemodialysis treatment , which will play an active role in extending survival time of patient. For middle-aged patient suffering from tumor, pay particular attention to whether or not kidney damage at the same time, or observe regularly whether or not there will be the possibility of kidney damage.In case of the occurrence of tumor , it would be better to inspect regularly for kidney patient who was usually treated by immunosuppressor.

A Thermodynamic Analysis Model on the Thermoelastic Martensitic Tansformation

Leading into two order-parameters, that is, the percent of the transformed martensite phi and the mean strain epsiv, this paper is mainly to discuss the influence of external applied stress a on the initial phase transition temperature Tc, the amount of the transformed martensite and the nature of the martensitic transformation by making use of Landaus phenomenological theory. A free-energy density functions is spread out according to phi and epsiv. The relations between phi and temperature T are investigated. The obtained conclusion can directly be compared with experimental results.